Greetings!
Check if there are small paper left when the paper was stuck. If that not solve the problem, turn off the printer, then open the printer window, by clicking 1. start 2. printers and faxes 3. double click the pritner icon and see if there are waitng document to be print. If ever there is, remove all the document by selecting that document or file then press the delete botton.
Re start your computer. Turn on your printer.
Try to print, that's all.
Thanks.

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Have you tried shutting it down completely? Also, double check to see if the inside of the printer is completely clean. I had the paper jam indicator showing because there a small piece of paper stuck inside. Also, found a helpful manual for a similar printer, you can see it here - Brother HL-2240 manual

Go to start>control panel >programs and features>uninstall the printer>Then use your install disk and reinstall the software without being connected to your printer.When the install disk tells you to hook up your printer do so.If this doesn't work why not just print to your laptop and and just start over when it's done?

Now, First of all make sure there is no paper pieces stuck inside the printer. To take out the papers.

Take out the duplex-er ( A box at the back of the printer which has two buttons at the ends of it which you can press to detach it from the printer :- It is used for duplex printing ) from the back of the printer.

Once you take it out you can see the ROLLERS and the ROD which takes the printer page and rolls back to give you the out put.

If you see any papers stuck inside then take it out. Now

Take a lint free cloth and clean the rod and rollers. Try to move the rollers in clock wise or anti clock wise direction. If it moves fine Other wise hardware issue.

Now attach the Duplex-er back to the printer.

Now Reset the printer:-

To reset it.Connect the printer power cord to the Wall Outlet or Wall Jack.Make sure it is not connected to the Serge Protector or power strip.

Partial reset :-

Now on the printer itself. --> Press and hold the # and 3 button at the same time. Now take out the Power cable from the back of the printer and wait for 20 sec. Now put the power cable back in the printer. Now release the two buttons. ( Note :- remember you need to hold down the # and 3 button the hold time )

(On the printer screen it should say Part nvm reset.)

Now try to turn on the printer and check if it shows the paper jam option. If it works Perfect. If not then do this :-

Semi-Full Reset:-

Open the front door and take out all the cartridges from the printer. Now close the door.

Now on the printer itself. --> Press and hold the # and 6 button at the same time. Now take out the Power cable from the back of the printer and wait for 20 sec. Now put the power cable back in the printer. Now release the two buttons. ( Note :- remember you need to hold down the # and 6 button the hold time )

( On the printer screen it should say Semi-Full rest )

The printer might shut down automatically or may be it won't. At this point Put the cartridges back into the printer and then turn on the printer if it was shut down.or If the printer is on turn it off and then switch it back on.

If you are getting a 'carriage jam' error as soon as you turn on your printer with no tasks in progress, then check for any piece of paper stuck in the carriage. Remove the paper carefully. If the paper tears, part of it might remain inside the paper path and damage the product.

Follow the steps for fix HP Printer Carriage Jam

Turn off the printer and open it to see where the paper is stuck.

Manually move the carriage toward the opposite side.

Check the paper path and remove any piece of paper or any other object that is stuck in the path.

your machine is having a problem lifting the cassette. remove all paper from machine look for folded or caught edges. turn machin off then on with no paer in it. load 1 tray at a time till the code comes back or you find the stuck paper

try to open the cover and reseat the ink.
the machine is trying tell you there is something stuck inside where the switch or the senser is located. usually right before the heater path. after the paper pickup roller.